feat: add user deletion functionality and fix known issues

public/assets/admin/locales/en-US.js

@@ -815,7 +815,11 @@ window.XBOARD_TRANSLATIONS['en-US'] = {
     "success": "Success",
     "save": "Save",
     "cancel": "Cancel",
-    "delete": "Delete",
+    "confirm": "Confirm",
+    "delete": {
+      "success": "Deleted successfully",
+      "failed": "Failed to delete"
+    },
     "edit": "Edit",
     "view": "View",
     "toggleNavigation": "Toggle Navigation",
@@ -832,6 +836,7 @@ window.XBOARD_TRANSLATIONS['en-US'] = {
     "logout": "Logout",
     "copy": {
       "success": "Copied successfully",
+      "failed": "Failed to copy",
       "error": "Copy failed",
       "errorLog": "Error copying to clipboard"
     },
@@ -1740,7 +1745,10 @@ window.XBOARD_TRANSLATIONS['en-US'] = {
         "reset_secret": "Reset UUID & URL",
         "orders": "Orders",
         "invites": "Invites",
-        "traffic_records": "Traffic Records"
+        "traffic_records": "Traffic Records",
+        "delete": "Delete",
+        "delete_confirm_title": "Confirm Delete User",
+        "delete_confirm_description": "This action will permanently delete user {{email}} and all associated data, including orders, coupons, traffic records, and support tickets. This action cannot be undone. Do you want to continue?"
       }
     },
     "filter": {

public/assets/admin/locales/ko-KR.js

@@ -815,7 +815,11 @@ window.XBOARD_TRANSLATIONS['ko-KR'] = {
     "success": "성공",
     "save": "저장",
     "cancel": "취소",
-    "delete": "삭제",
+    "confirm": "확인",
+    "delete": {
+      "success": "삭제되었습니다",
+      "failed": "삭제에 실패했습니다"
+    },
     "edit": "편집",
     "view": "보기",
     "toggleNavigation": "네비게이션 전환",
@@ -831,9 +835,8 @@ window.XBOARD_TRANSLATIONS['ko-KR'] = {
     "settings": "설정",
     "logout": "로그아웃",
     "copy": {
-      "success": "복사 성공",
-      "error": "복사 실패",
-      "errorLog": "클립보드에 복사하는 중 오류 발생"
+      "success": "복사되었습니다",
+      "failed": "복사에 실패했습니다"
     },
     "table": {
       "noData": "데이터가 없습니다",
@@ -1692,9 +1695,12 @@ window.XBOARD_TRANSLATIONS['ko-KR'] = {
         "assign_order": "주문 할당",
         "copy_url": "구독 URL 복사",
         "reset_secret": "UUID 및 URL 재설정",
-        "orders": "주문",
-        "invites": "초대",
-        "traffic_records": "트래픽 기록"
+        "orders": "주문 내역",
+        "invites": "초대 내역",
+        "traffic_records": "트래픽 기록",
+        "delete": "삭제",
+        "delete_confirm_title": "사용자 삭제 확인",
+        "delete_confirm_description": "이 작업은 사용자 {{email}}와 관련된 모든 데이터(주문, 쿠폰, 트래픽 기록, 지원 티켓 등)를 영구적으로 삭제합니다. 이 작업은 취소할 수 없습니다. 계속하시겠습니까?"
       }
     },
     "filter": {

public/assets/admin/locales/zh-CN.js

@@ -820,7 +820,11 @@ window.XBOARD_TRANSLATIONS['zh-CN'] = {
     "success": "成功",
     "save": "保存",
     "cancel": "取消",
-    "delete": "删除",
+    "confirm": "确认",
+    "delete": {
+      "success": "删除成功",
+      "failed": "删除失败"
+    },
     "edit": "编辑",
     "view": "查看",
     "toggleNavigation": "切换导航",
@@ -837,6 +841,7 @@ window.XBOARD_TRANSLATIONS['zh-CN'] = {
     "logout": "退出登录",
     "copy": {
       "success": "复制成功",
+      "failed": "复制失败",
       "error": "复制失败",
       "errorLog": "复制到剪贴板时出错"
     },
@@ -1707,7 +1712,10 @@ window.XBOARD_TRANSLATIONS['zh-CN'] = {
         "reset_secret": "重置UUID及订阅URL",
         "orders": "TA的订单",
         "invites": "TA的邀请",
-        "traffic_records": "TA的流量记录"
+        "traffic_records": "TA的流量记录",
+        "delete": "删除",
+        "delete_confirm_title": "确认删除用户",
+        "delete_confirm_description": "此操作将永久删除用户 {{email}} 及其所有相关数据，包括订单、优惠码、流量记录、工单记录等信息。删除后无法恢复，是否继续？"
       }
     },
     "filter": {